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Conocimientos mecánicos sobre los efectos del dopaje de nitrógeno en el biocarbón cargado de cobalto para la

Chuanbin Wang¹, Yixi Xie¹, Ning Li²

¹Guangdong Basic Research Center of Excellence for Ecological Security and Green Development, Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China; School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.

Bioresource technology

|February 11, 2026

Resumen

Este estudio optimizó los catalizadores de biochar dopados con nitrógeno derivados del estiércol de vaca para eliminar el sulfametoxazol (SMX) utilizando peroxymonosulfato (PMS). El dopaje de nitrógeno medio produjo los mejores resultados para la degradación de contaminantes.

Área de la Ciencia:

Ciencias ambientales Ciencias ambientales.
Química de los materiales Química de los materiales
La catálisis de la catálisis.

Sus antecedentes:

El sulfametoxazol (SMX) es un contaminante antibiótico común en el agua.
Los catalizadores basados en el biocarbono ofrecen potencial para la remediación ambiental.
La optimización de las propiedades del catalizador es crucial para la eliminación eficiente de contaminantes.

Objetivo del estudio:

Para sintetizar y evaluar cobalto/nitrógeno co-doped biochars para mejorar la eliminación de SMX.
Para investigar el efecto de la variación del contenido de nitrógeno en el rendimiento catalítico.
Para dilucidar los mecanismos detrás de la degradación de SMX utilizando peroximonosulfato (PMS).

Principales métodos:

El biochar derivado del estiércol de vaca fue dopado con cobalto y diferentes niveles de nitrógeno.
Los catalizadores sintetizados se caracterizaron por sus propiedades estructurales y electrónicas.
La actividad catalítica se probó en un proceso de oxidación basado en PMS para la degradación de SMX.
Los estudios mecanicistas incluyeron cálculos de DFT.

Principales resultados:

El dopaje de nitrógeno alteró significativamente la superficie del biochar, la estructura de los poros y las propiedades electrónicas.
El biochar medio dopado con nitrógeno (CoBC-2) mostró una activación óptima de la PMS y tasas de degradación de SMX.
El dopaje moderado de nitrógeno mejoró sinérgicamente la actividad de los grupos funcionales Co-O, N grafítico y oxígeno.
DFT confirmó una transferencia de electrones mejorada, adsorción de PMS y escisión de enlaces OO en CoBC-2.

Conclusiones:

El contenido optimizado de nitrógeno en los catalizadores de biocarbón es clave para la eliminación eficiente de SMX.
El biochar co-dopado con dopaje moderado de nitrógeno muestra un rendimiento superior en la oxidación basada en PMS.
Esta investigación proporciona una estrategia de diseño para catalizadores sintonizables de biocarbono en el tratamiento de agua.

Palabras clave:

Procesos avanzados de oxidación.El dopaje heteroatómico.El biocarbón cargado de metal es el biochar.Pero la activación del peroximonosulfato Las especies reactivas de oxígeno.

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